Java Regex Number Validate isNumeric(String str)

Description

is Numeric

License

Open Source License

Declaration

public static boolean isNumeric(String str) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {

    public static boolean isNumeric(String str) {
        if (isNullOrEmpty(str)) {
            return false;
        }/*from ww  w .jav  a  2  s .  c om*/
        String NUMERIC_PATTERN = "^(-?\\d+)(\\.\\d+)?$";
        Pattern pattern = Pattern.compile(NUMERIC_PATTERN);
        Matcher matcher = pattern.matcher(str);
        return matcher.matches();
    }

    public static boolean isNullOrEmpty(String s) {
        return s == null || s.length() == 0;
    }

    public static boolean isNullOrEmpty(String... ss) {
        for (String s : ss) {
            if (s == null || s.length() == 0) {
                return true;
            }
        }
        return false;
    }
}

Related

1. isNumeric(String number)
2. isNumeric(String s)
3. isNumeric(String str)
4. isNumeric(String str)
5. isNumeric(String str)
6. isNumeric(String str)
7. isNumeric(String text)
8. isNumeric(String value)
9. isNumericAndCanNull(String src)